/*
 * $Id: BlsProperties.java 172 2010-10-10 07:41:02Z LJ $
 * 
 * Copyright (c) 2001-2008 Accentrix Company Limited. All Rights Reserved.
 * 
 * Accentrix Company Limited. ("Accentrix") retains copyright on all text, source
 * and binary code contained in this software and documentation. Accentrix grants
 * Licensee a limited license to use this software, provided that this copyright
 * notice and license appear on all copies of the software. The software source
 * code is provided for reference purposes only and may not be copied, modified 
 * or distributed.
 * 
 * THIS SOFTWARE AND DOCUMENTATION ARE PROVIDED "AS IS," WITHOUT ANY WARRANTY OF
 * ANY KIND UNLESS A SEPARATE WARRANTIES IS PURCHASED FROM ACCENTRIX AND REMAINS
 * VALID.  ALL EXPRESS OR IMPLIED CONDITIONS, REPRESENTATIONS AND WARRANTIES,
 * INCLUDING ANY IMPLIED WARRANTY OF MERCHANTABILITY, FITNESS FOR A PARTICULAR
 * PURPOSE OR NON-INFRINGEMENT, ARE HEREBY EXCLUDED. ACCENTRIX SHALL NOT BE LIABLE
 * FOR ANY DAMAGES SUFFERED BY LICENSEE AS A RESULT OF USING OR MODIFYING THE
 * SOFTWARE OR ITS DERIVATIVES.
 * 
 * IN NO EVENT WILL ACCENTRIX BE LIABLE FOR ANY LOST REVENUE, PROFIT OR DATA, OR
 * FOR DIRECT, INDIRECT, SPECIAL, CONSEQUENTIAL, INCIDENTAL OR PUNITIVE DAMAGES,
 * HOWEVER CAUSED AND REGARDLESS OF THE THEORY OF LIABILITY, ARISING OUT OF THE
 * USE OF OR INABILITY TO USE SOFTWARE, EVEN IF ACCENTRIX HAS BEEN ADVISED OF THE
 * POSSIBILITY OF SUCH DAMAGES.
 */
package com.snowleopard.common.constants;

import java.io.IOException;
import java.net.URL;
import java.util.Properties;

import org.apache.log4j.Logger;
import org.apache.log4j.helpers.Loader;

/**
 * Bound the property file 'appConstants.properties' to static class 'AppConstantProperties'
 * 
 * @author LiuJian
 *
 */
public class AppConstantProperties {
	private static final Logger logger = Logger.getLogger(AppConstantProperties.class);

	public static String getPropValue(String propKey) {

		return PropertiesHolder.props.getProperty(propKey);

	}

	private static class PropertiesHolder {
		private static Properties props = null;

		static {
			logger.info("Reading application properties from appConstants.properties ... ");
			URL url = Loader.getResource("appConstants.properties");
			props = new Properties();

			try {
				props.load(url.openStream());
			} catch (IOException e) {
				logger.error("Error reading file appConstants.properties!", e);
			}
		}
	}
}
